| Service | TCP/IP Port | Description |
|---|---|---|
| FTP | 21 | Initial port used for FTP, used for connecting, logging in and issuing commands |
| FTP and FTPS | 30000 to 30100 | Data-Ports used for Data-Connections (directory-listings and file-transfers). These ports *MUST* be opened and port-forwarded in order to offer FTP to clients on the internet |
| FTPS | 21,990 | Explicit vs Implicit Mode These two ports are used for connecting, logging in and issuing commands. |
| SFTP | 22 | Standard SSH port, used for all communication (does not need PASV) |